Hi Peter. I originally used a Toko 421 coil that had been used for a 455Khz I.f No additional cap. It refused point blank to operate, after lots of winds and rewinds, I used some fixed RF chokes... finishing up at 150uH... and a 470pf.. Incidentally I had removed the input filter and fed the chip from my Anritsu generator. So thats where it finished up....I had the TBA120U in stock, plus the MC3357, which is a dual conversion IC. But I decided the MC3357 was overkill, I already use the MC in my new 2 M multimode radio project. OK about the article..... I already have that and I based my version on that data sheet, but thanks
